Calder's Geo
Calders Geo is an inlet in the western cliffs of Esha Ness in Northmavine on the Mainland, Shetland, Scotland. A cave on the north side of the geo has been measured at more than one and a half times the size of "The Frozen Deep", a chamber in Reservoir Hole under Cheddar Gorge in Somerset, potentially making it the largest natural chamber in Britain.[1]
Geologist Jonathan Swale used a laser range-finder to measure the interior of the cave, which is only accessible during calm seas. He claims that the structure is over 20 metres (66 ft) tall and has a floor area of around 5,600 square metres (60,000 sq ft).[2]
Esha Ness Lighthouse just south of the geo was designed by David Alan Stevenson and commissioned in 1929.[3]
References
60°29′27″N 1°37′18″W / 60.4907°N 1.6218°W / 60.4907; -1.6218
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Northmavine
- Villages:
- Hillswick
- North Roe
- Ollaberry
- Sullom
- Other settlements
- Assater
- Braehoulland
- Braewick
- Burnside
- Eastwick
- Fethaland
- Gunnister
- Haggrister
- Hamnavoe
- Heylor
- Hogaland
- Housetter
- Isbister
- Mangaster
- Nibon
- North Gluss
- South Gluss
- Sandvoe
- Skelberry
- Stenness
- Swinister
- Tangwick
- Upper Urafirth
- Urafirth
- Ure
- Valladale
- Voe
- West Heogaland
- Coastal features:
- Calder's Geo
- Grind of the Navir
- Lang Ayre
- Mavis Grind
- Maritime features
- Ronas Voe
- St Magnus Bay
- Sullom Voe
- Yell Sound
- Islets:
- Dore Holm
- The Drongs
- Egilsay
- Skerry of Eshaness
- Muckle Ossa
- Isle of Nibon
- Isle of Niddister
- Ramna Stacks
- Isle of Stenness
- Uyea
- Isle of Westerhouse
- Hills:
- Ronas Hill
- Lochs:
- Eela Water
- Johnnie Mann's Loch
- Punds Water
- Johnnie Notions
- Tom Anderson
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| Mainland Parishes | ||
| Insular Parishes | ||
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Extreme points
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